<!doctype html>
<meta charset=utf-8>
<script src="../testcommon.js"></script>
<body>
<script>
'use strict';

async_test(function(t) {
  var div = addDiv(t);
  div.style.transform = 'translate(0px)';
  window.getComputedStyle(div).transform;
  div.style.transition = 'transform 100s';
  div.style.transform = 'translate(10px)';
  window.getComputedStyle(div).transform;

  var animation = div.getAnimations()[0];
  var originalReadyPromise = animation.ready;

  animation.ready.then(t.step_func(function() {
    assert_equals(animation.ready, originalReadyPromise,
                  'Ready promise is the same object when playing completes');
    animation.pause();
    assert_not_equals(animation.ready, originalReadyPromise,
                      'Ready promise object identity differs when pausing');
    t.done();
  }));
}, 'A new ready promise is created each time play() is called'
   + ' the animation property');

async_test(function(t) {
  var div = addDiv(t);

  // Set up pending transition
  div.style.transform = 'translate(0px)';
  window.getComputedStyle(div).transform;
  div.style.transition = 'transform 100s';
  div.style.transform = 'translate(10px)';
  window.getComputedStyle(div).transform;

  var animation = div.getAnimations()[0];
  assert_equals(animation.playState, 'pending', 'Animation is initially pending');

  // Set up listeners on ready promise
  animation.ready.then(t.step_func(function() {
    assert_unreached('ready promise was fulfilled');
  })).catch(t.step_func(function(err) {
    assert_equals(err.name, 'AbortError',
                  'ready promise is rejected with AbortError');
    assert_equals(animation.playState, 'idle',
                  'Animation is idle after transition was cancelled');
  })).then(t.step_func(function() {
    t.done();
  }));

  // Now remove transform from transition-property and flush styles
  div.style.transitionProperty = 'none';
  window.getComputedStyle(div).transitionProperty;

}, 'ready promise is rejected when a transition is cancelled by updating'
   + ' transition-property');

async_test(function(t) {
  var div = addDiv(t);

  // Set up pending transition
  div.style.marginLeft = '0px';
  window.getComputedStyle(div).marginLeft;
  div.style.transition = 'margin-left 100s';
  div.style.marginLeft = '100px';
  window.getComputedStyle(div).marginLeft;

  var animation = div.getAnimations()[0];
  assert_equals(animation.playState, 'pending', 'Animation is initially pending');

  // Set up listeners on ready promise
  animation.ready.then(t.step_func(function() {
    assert_unreached('ready promise was fulfilled');
  })).catch(t.step_func(function(err) {
    assert_equals(err.name, 'AbortError',
                  'ready promise is rejected with AbortError');
    assert_equals(animation.playState, 'idle',
                  'Animation is idle after transition was cancelled');
  })).then(t.step_func(function() {
    t.done();
  }));

  // Now update the transition to animate to something not-interpolable
  div.style.marginLeft = 'auto';
  window.getComputedStyle(div).marginLeft;

}, 'ready promise is rejected when a transition is cancelled by changing'
   + ' the transition property to something not interpolable');

done();
</script>
</body>
